v1.16.4

v1.16.4

* SECURITY
  * Restrict email address validation (#17688) (#19085)
  * Fix lfs bug (#19072) (#19080)
* ENHANCEMENTS
  * Improve SyncMirrors logging (#19045) (#19050)
* BUGFIXES
  * Refactor mirror code & fix `StartToMirror` (#18904) (#19075)
  * Update the webauthn_credential_id_sequence in Postgres (#19048) (#19060)
  * Prevent 500 when there is an error during new auth source post (#19041) (#19059)
  * If rendering has failed due to a net.OpError stop rendering (attempt 2) (#19049) (#19056)
  * Fix flag validation (#19046) (#19051)
  * Add pam account authorization check (#19040) (#19047)
  * Ignore missing comment for user notifications (#18954) (#19043)
  * Set `rel="nofollow noindex"` on new issue links (#19023) (#19042)
  * Upgrading binding package (#19034) (#19035)
  * Don't show context cancelled errors in attribute reader (#19006) (#19027)
  * Fix update hint bug (#18996) (#19002)
* MISC
  *  Fix potential assignee query for repo (#18994) (#18999)
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